package day170402;

public class cspiao {
    public static void main(String[] args) {
        piao p = new piao();
        Thread a = new Thread(p,"窗口1");
        Thread b = new Thread(p,"窗口2");
        Thread c = new Thread(p,"窗口3");
        Thread d = new Thread(p,"窗口4");

        a.start();
        b.start();
        c.start();
        d.start();
    }
}
